Valve for pneumatic tires.



-No. 655,451. Patented Aug. 7, I900. E. W. MGCASLIN.

VALVE FOB PNEUMATIC TIRES.

(No Model.)

:reas a) momumo" WASNINGTON u c UNITED STATES PATENT OFFICE.

ELTON XV. MCOASLIN, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE MORGAN &WRIGHT, OF SAME PLACE.

VALVE FOR PNEUMATIC TIRES.

SPECIFICATION forming part of Letters Patent N 0. 655,451, dated August'7, 1900.

Application filed November 22, 1899. $eria1 No. 737,924. (NO 1101181 Toall whom it may concern:

Be it known that I, ELTON W. MoCAsLIN, of Chicago, county of Cook, Stateof Illinois, have invented a certain new and useful Improvement inValves for Pneumatic Tires, of

which the following is a specification.

My invention relates to valve devices for inflatable tires, andparticularly to a construction involving a molded rubber base or cot bywhich the device is secured to the tire.

My invention contemplates a valve shell or casing having its baseprovided with a molded rubber cot and having also a thimble inserted inits base. The end Wall of said thimble is provided with a small opening,and the rubber, which extends into and fills the hollow of the thimble,is provided with a passage which registers with said opening. In thisway the valve shell or casing is provided with a suitable passagethrough which the air is pumped into the tire, and at the same time theshell and cot are effectively fastened together.

In the accompanying drawings, Figure l is a side elevation of a valvedevice constructed in accordance with my invention. Fig. 2 is a centrallongitudinal section of the same.

Fig. 3 is aview illustrating the manner in which the cot is molded uponthe base of the shell or casing and showing the mandrel employed formaking an opening, in the rubber. Fig. 4 is a perspective of the thimblewhich I insert in the base of the shell.

The particular form of valve in connection with which I have illustratedmy invention comprises avalve-casin g A, avalve a, a spring a, and athreaded plug a the latter being screwed into the inner end of saidcasing. A cap a is screwed upon the outer end of the casing A, and thelatter is preferably internally threaded at a and also externally at aThe external threading of the casing A permits it to be screwed into theneck or contracted portion 6 of the outer shell or casing which extendswithin and fills the hollow of the said thimble, is provided with apassage 0. This passage 0 registers with the opening 01 in the end wallof the thimble, and the passage thus provided aftords an opening throughwhich the air is pumped into the tire. The face of the cot can becemented to the air- .tube of the tire in the usual manner, and the tirecan of course be inflated by screwing a pump-nipple into the outer endof the easing A.

Any suitable device or means may be employed for providing the cot withthe passage 0; but as a simple method I temporarily insert a mandrelthrough the opening d in the thimble and then mold the rubber about themandrel and easing, as shown in Fig. 3. The thimble D serves to preventthe rubber from extending an objectionable distance within the shell orcasing B, and by allowing the rubber to fill the hollow of the thimble Imake the joint air-tight and eflectually fasten the cot and shelltogether. An inwardly-projecting bead b is preferably formed upon theinner surface of the outer shell or casing 13, the said bead serving asa stop to limit the insertion of the thimble.

What I claim as my invention is 1. A valve device for pneumatic tirescomprising an outer shell or casing into which the valve-casing properis screwed and which is provided with a flanged base, a rubber cotmolded upon said flanged base, and a thimble secured within the base ofsaid outer shell or casing and having its interior filled with therubber of said cot, the thimble being provided with an opening whichregisters with an opening in the rubber.

2. The combination of a metal shell having a flanged base, a rubber cotmolded upon said flanged base, and a metal thimble inserted and expandedwithin the base of said shell, the rubber of the cot filling the thimbleand said rubber filling and thimble having a passage therethrough,substantially as described.

ELTON W. MOOASLIN.

Witnesses:

ARTHUR F. DURAND, AGNES A. DEVINE.

